Multiple-call-bell switch.



LE ROY I. PREAS. MULTIPLE CALL BELL SWITCH. APPLICATION FILED MAY 11, 1908.

Patented Feb. 9, 1909.

WITNESSES ATTORNEY Q" 1 rel isap multip lecall giss'plaeed the metallic plu s D 7 wires E in position and elp to form the con- TE 'IPA N OFFICE.

LE nor 1. FREAS, or OHALFONT, PENNSYLVANIA. tro rrrna-catnnnnr. swrrcn.

.I'o'aa whom it may concern: 'Be it known that 1, LE ROY I. FREAB, a citizen of the United States, residing at Chalfont, county of Bucks, and State of Pennsyl- 5 vama have invented a certain new and Improvement in Multiple-Call-Bell Switches, of which the following is a specification. My invention relates to a new and useful .loim rovement in multiple call bell switches,

a has for its object to provide an exceedin'gly simple and efiective device of'this characterby means of which any numberof bells ma&be rung one at a'timen' .15 .1 ith these ends in view this invention consists in the-details of construction'and combination of elements hereinafter set forth and then specifically designated b the claims.

In order that those skilled in'the art to Wwhich this invention. ap ertains may under-'- stand how to make an use the same I will describe its construction in detail referring by letter to the accompanying drawin formin apart of this specification in whic an view of my improved bell switch showing a number of ,bells connected thereto. Fig.-- 2, is a sectional view thereof.

carrying out my invention as hereeme0 Ebodied, A represents a block of wood or other suitable material ha the openings B formed therein in In thelower portions of the o enin B are which-hind the *nection 'hereinafter described. Above these plugs D- are placed the plungers F around which and fastened thereto are the spiral 40 8 rings G, thus normally holding the plunger l from engagement wit the plu s D.

H indicates a plug which is aced-in the lower portion of the openings d holding the wire I in lace and assistin in forming the 45. circuit which will be hereina er described.

Extending into the o enings O is a plunger J having the arm K ormed therewith the outer end of which is bent downward to form the extension L. The upper ends of the 50. pl r rod J has a thread formed thereon on whic is threaded the insulated knob M. About the lower portion and secured to the plunger rod is the coil spring N, which normally holds said plunger rod out of en agement with the plug H- and the extension Specification of Letters Patent. Application filed May 11, 1908. Serial No. 432,058.

roxirmty to its clrcumierence and the openings 0 in the center thereof.

. Patented reb.e,.1eoo.

i I the arm K'out of engagement withthe plungers F.

0 represents anumber of bells which may be. laced in different parts of a building, suc as m the rooms of a hotel, these are connected to the switch by the wires E.

P indicates a battery which is connected to theswitch by the wire'I and the bells are connected with the battery by the wire Q.

Thus it will beseen from the forego' descri'tion that should the extension forms on the ar m K be placed ,above one of the openings B and the plunger rod J be pressed down, this will cause the longer rod Jto form a connection with t e p ug Hind the efxtefiisioii L and gprm a contact wit oneote ers, ress' it down until it form s ii iiontact ith ig of the plugs D-- which will cause a current of electricity to flow from the'battery through the-wires to one of the bells thus causing that bell to rin Of course I do not wish to be limited to the exact details of construction here shown as these may be varied within so certain limits'without departing from the spirit of my invention.

H t us fully described my invention what I c aim as new and useful 1s- 1. In combination, a block of wood, of any suitable material, having opemngs formed therein, in proximity to its circumference, and an opening in the center thereof, metallic plugs, placed in the lower ends of these openings, plungers placed in the openings which are in proximity to the circumference, spiral springs coiled about said plungers one end of'which is securedthereto for normally 'holdin said plunger, out of engagement with the p ugs, a plunger rod extending into the opening formed m the center of the block, an arm formed therewith, in proximity to this-opening and an, extension formed in the outer end of said arm, adapted to press the lunger idownward intlo contact with the p ugs, a coil s'ring placed about the inner end of the p unger rod, for normally holding the .plunger rod out of engagement with the plug placed in the lower portion of. the 105 opening in which said plunger rod 15 placed, an insulated knob threaded. on the upper end of the plunger rod, bells, wires connecting oneof theposts of said bells with theplugs placed in the opening formed proximity to the circumference of the block,

a battery, a wire for connecting said battery with the plug placed in the central opening of the block and other wires connecting the bells with the battery so that when the plunger rod is fplaced downward it will cause a current 0 electricity to pass through these Wires ringing any bell desired, as shown and described.

2. In combination, a block of wood or other suitable material, having openings formed therein in proximity to its circumference and one in the center thereof, plugs placed in the lower portion of the openings which are formed in proximity to the circumference, plungers laced in said openings, means for norma ly holding them out of engagement with the plugs, a plug placed in thelower portion of the opening formed in thecenter of said block, a plunger rod also placed in said opening means for normally holding it out of engagement'with said plug, an arm, having an extension formed in its outer end fastened to the hunger rod, bells, wires for connecting said.

.-ells with the plugs placed in the o ening -formed in proximity to the circum'erence of the block, a battery, a wire for'connecting said battery with the plug placed in the opening formed in the center of the block and means for connecting the battery with the bell as shown and described.

In testimony whereof, I have hereunto aflixed my signature in the presence oftwo' 

